Xilinx
AI Engine GMIO Performance Profile: Measurements using timer do not provide the listed performance
** Which tutorial are you running? ** https://github.com/Xilinx/Vitis-Tutorials/blob/2022.2/AI_Engine_Development/Feature_Tutorials/02-using-gmio/perf_profile_aie_gmio.md using macro TIMER.
** Describe the issue ** Measurements using timer do not provide the listed performance. I measured it twice, and both times the performance was lower than stated. Performance is particularly low when num=1 for the first time.
** To Reproduce **
export ROOTFS=xilinx-versal-common-v2022.1/rootfs.ext4
export IMAGE=xilinx-versal-common-v2022.1/Image
. xilinx-versal-common-v2022.1/environment-setup-cortexa72-cortexa53-xilinx-linux
make package TARGET=hw
cd sw
gedit Makefile &
CXXFLAGS += -std=c++14 -D__TIMER__ -I$(XILINX_VIVADO)/include/ -I${SDKTARGETSYSROOT}/usr/include/xrt/ -O0 -g -Wall -c -fmessage-length=0 --sysroot=${SDKTARGETSYSROOT} -I${XILINX_VITIS}/aietools/include ${HOST_INC}
make clean
make
cd ../
cp host.exe host_timer.exe
copy host_timer.exe to the SD card.
booting Linux from an SD card
export XILINX_XRT=/usr
cd /run/media/mmcblk0p1
./host_timer.exe a.xclbin
** Your environment: **
- OS: Red Hat Enterprise Linux Workstation release 7.5
- Software Version: 2022.1
- Hardware (if applicable): VCP190 production board
Hi @AlphaBu, may I know if the recent push for 2024.2 still has this issue?
Thanks Anusheel
The test case is updated in later releases. And the performance number is updated too. The number may vary every run.
